Our board

The Thames Water Utilities Limited Board is made up of the Chairman, two Executive Directors, the Chief Executive Officer (CEO) and Chief Financial Officer (CFO) as well as ten Non-Executive Directors, six of whom are independent.

Between the Directors, there is a wealth of management and financial experience, together with extensive specialist knowledge of the water industry and other regulated utilities.

Both our Board and Ofwat consider six of the Directors to be Independent Non-Executives, forming the largest single group on the Board.


Ian Marchant

Ian was appointed as an Independent Non-Executive Director, on 1 December 2017, and became our Chairman on 26 January 2018, following Sir Peter Mason’s retirement.

Ian spent 21 years at SSE plc, as Chief Executive and prior to that as Finance Director, before his retirement in June 2013. Ian was an Independent Chairman of Maggie’s Cancer Charity and is currently Independent Chairman of John Wood Group plc, Chair of Nova Innovation Ltd and a Non-Executive Director of Aggreko plc. Through his company Dunelm Energy Limited, he advises and invests in start-up businesses.

He is a visiting professor at Edinburgh and Durham University Business Schools and chairs the Strathclyde University CEP Advisory Board. Ian is also the founder of Scotland’s ‘Lights up Malawi’ Campaign for Climate Justice and was recently appointed Honorary President of the Royal Zoological Society of Scotland. Ian is the former Chairman, and founder of Scotland 2020 Climate Group, and served as the President of the Energy Institute and Chairman of the renewable energy firm Infinis.

Executive directors

Steve Robertson, Chief Executive Officer

Steve Robertson became CEO of TWUL in September 2016, having previously held the position of Chief Executive Officer at Truphone, where he developed ground breaking technology allowing it to become a disruptive player in the global market.

More about Steve

Brandon Rennet, Chief Financial Officer

Brandon Rennet joined TWUL March 2017, as Chief Financial Officer.

More about Brandon

Nick Fincham, Director of Strategy and Regulation

Nick has been a member of our Executive Committee since 2011, as Director of Strategy and Regulation. 

More about Nick

Independent non-executive directors

Alistair Buchanan

Alistair was appointed as an independent non-executive Director of Thames Water Utilities Limited in July 2018. Prior to joining Thames Water, Alistair was Chief Executive Officer of Ofgem (UK's gas and electricity markets regulator) from 2003 to 2013, during which time he also sat on the Boards of Durham University and Scottish Water.

In 2013 Alistair re-joined KPMG, where he had qualified as a chartered accountant, as Chairman and Partner of the UK Utilities Practice until his retirement in 2018. Before joining Ofgem, he spent the majority of his career in financial services with investment banks where he was the top ranked analyst in his sector.

Alistair was awarded a CBE in 2008 for services to energy policy making. Alistair also currently sits on the Board of the Royal Holloway University.

Nick Land

Nick became an independent non-executive Director of Thames Water Utilities Limited in February 2017. A chartered accountant, Nick retired as Chairman of Ernst & Young LLP in 2006 after a career spanning 36 years with the firm. He became an audit partner in 1978 and held a number of management appointments before becoming Managing Partner in 1992. He was elected Chairman in 1995 and joined the Global Executive Board at that time. He was also Chairman of Ernst & Young’s Northern Europe, India, Middle East and Africa Region.

Nick is a non-executive Director of the Financial Reporting Council and stepped down as non-executive Director of Vodafone Group plc in July 2017, Ashmore Group plc in October 2016, BBA Aviation plc in May 2016, Alliance Boots GmbH in 2015 and Royal Dutch Shell plc in 2010. He is an adviser to the board of Dentons UKEMEA LLP and chairs the Private Equity Reporting Group of the British Venture Capital Association.

He is also Chairman of the board of trustees of the Vodafone Group Foundation.

Catherine Lynn

Catherine Lynn was appointed as an independent non-executive Director of Thames Water Utilities Limited on 28 November 2018.

Catherine is a former Group Strategy and Group Commercial Director at EasyJet and played a leadership role in Europe’s low cost aviation sector for 20 years, with a focus on delivering outstanding customer service.

She was also part of the start-up team for British Airways budget carrier Go Fly, as founding Head of Customer Services. Catherine has more than 10 years’ experience as a Non-Executive Director, including seats on audit and risk and chair of remuneration committees with Airport Coordination Limited (ACL) and Liberty Living, a leading student accommodation provider.

Ian Pearson

Ian Pearson was appointed as an independent non-executive Director of Thames Water Utilities Limited in September 2014. He is Chairman of Code Investing Ltd and for five years, he was Chairman of Octopus VCT2 plc.

Ian is an advisor to BAI Communications and was a member of PwC’s UK Advisory Board, for five years. Among other advisory roles, Ian held various roles in government between 1994 and 2010 when he stood down as an MP before the general election. He was Economic Secretary to the Treasury between 2008 and 2010, and prior to that, he had roles as Science and Innovation Minister, Minister for Climate Change and the Environment, Minister for Trade and as a Minister in Northern Ireland.

Ian studied PPE at Balliol College, Oxford, before gaining a Masters and Doctorate at the University of Warwick.

Jill Shedden

Jill was appointed as an independent non-executive Director of Thames Water Utilities Limited on 1 October 2018.

Jill joined Centrica as a graduate trainee in 1988, where she held a wide range of generalist HR roles across the Group before being appointed HR director for the British Gas Business in 2002, HR Director of British Gas Energy in March 2007 and HR director in Centrica Energy in April 2009.

Since July 2011, Jill has been the Group HR director for Centrica. Her focus has been on building a high performance environment and a great place to work. She has achieved operational and commercial success, as well as ‘Best Companies’ and ‘Great Places to Work’ awards, throughout her career.

In recognition of her work with the Women’s Business Council, the 2017 New Year’s Honour list’, awarded Jill with an MBE for ‘services to women and equality’.

David Waboso CBE

David was appointed as an independent non-executive Director of Thames Water Utilities Limited on 1 February 2019.
David is a highly experienced engineer and project manager who has worked with private firms and owner clients on infrastructure programmes in the UK and internationally.
As a Chartered Engineer, David has held the position of Director Technical at the Strategic Rail Authority, was the UK representative on the European Rail Agency and non-executive director of the Rail Safety and Standards Board. He has worked on a succession of major infrastructure upgrades including Docklands Light Railway and the Jubilee Line Extension where he led the strategy and then commissioning of the system into operational service.
In 2014, David was awarded a CBE for services to transport in London. Since 2015, he has been President of the Association for Project Management (APM), the largest professional body of its kind in Europe. Most recently, he was the Managing Director, Digital Railway at Network Rail until his retirement in March 2019

Non-executive directors

Kenton Bradbury

Kenton was appointed non-executive Director of Thames Water Utilities Limited, in May 2017. He is currently Managing Director, Asset Management at OMERS Investments, with a focus on Europe. His asset management experience includes Caruna, Ellevio, NET4GAS, Scotia Gas Networks, and Tank & Rast. 

Kenton previously served as a Non-Executive Director of Yorkshire Water and Affinity Water and was a Director at Infracapital (the infrastructure investment arm of M&G Investments) where he sat on the boards of various portfolio companies. Prior to Infracapital, he was SVP Infrastructure and Regulation at e.on, based in Germany. He began his career as a consultant, working in the utilities and space sectors as well as holding various senior operational and strategic roles in infrastructure businesses. Kenton is a Chartered Engineer and currently sits on the boards of London City Airport, Caruna in Finland and Net4Gas in the Czech Republic amongst others.

Christopher Deacon 

Christopher became a non-executive Director of Thames Water Utilities Limited, in December 2006. He is an independent infrastructure and project finance consultant, adviser to OFGEM, and a Non-Executive Director of various companies in the infrastructure and PPP market place. 

His career in banking and structured/infrastructure finance has spanned over 20 years, acting as adviser and banker in major infrastructure and project financing, around the world. He has acted as a consultant on large infrastructure projects in both the public and private sectors, with assignments including Eurotunnel, Channel Tunnel Rail Link, Tube PPP, and other transport infrastructure projects. 
Christopher is a director of the trading company of London Business School and a past School Governor. He is Treasurer/Trustee of the Franco British Council UK Section. 

John Morea

John became a non-executive Director of Thames Water Utilities Limited, on 28 January 2019. 

John has over 30 years’ experience within the utility sector and for more than 10 years, he has been at the helm of Scotia Gas Networks Limited (SGN) as its CEO, developing it into one of the most respected and highly efficient energy companies in the UK. His passion for innovation has been the driving force in putting the company at the forefront of the robotics revolution in gas networks as well as the advancements from gas quality projects. 

John has a personal interest in both developing people and areas such as diversity and inclusion, apprentice and graduate programmes and in external promotion of science, technology, engineering and mathematics (STEM) subjects to young people.   

John is an incorporated engineer, holds an MBA, and is a member of the Institute of Engineering and Technology and a companion of the Institute of Gas Engineers and Managers (IGEM). He is current a Non-Executive Director of Associated British Ports (ABP) and was previously a director of the Energy Networks Association.

Greg Pestrak

Greg Pestrak was appointed as a non-executive Director of Thames Water Utilities Limited, in November 2017. Greg is an Executive Vice President at Wren House Infrastructure, where his focus is on Asset Management across the portfolio, which in addition to Thames Water includes other regulated and non-regulated global assets. Prior to joining Wren House, Greg was a Partner in KPMG’s Global Strategy Group based in the UK, where he was the Infrastructure lead since 2009.

Greg has over 17 years consulting experience, working with Investors and Corporates to drive performance improvement in response to transactions, changes in the market, customer or regulatory environment or financial pressure, bringing an independent and constructively challenging perspective to business and operating models. His experience includes working across multiple sectors over his career, and most recently, he has led performance improvement programmes in the UK and Globally in the Water, Power Generation, Transmission, and Distribution, Telecoms, Transport, and Infrastructure Services sectors.

Prior to his career in consulting, Greg worked in Finance with Rothschild Asset Management and Jardine Fleming Asset Management, in Hong Kong and the UK. Greg holds a Sloan Fellowship Masters in Management, from the London Business School and a B.A. from The University of King’s College, Canada.